// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "ipc/message_router.h"

#include "ipc/ipc_message.h"

namespace IPC {

MessageRouter::MessageRouter() { }

MessageRouter::~MessageRouter() { }

bool MessageRouter::OnControlMessageReceived(const IPC::Message& msg)
{
    NOTREACHED()
        << "should override in subclass if you care about control messages";
    return false;
}

bool MessageRouter::Send(IPC::Message* msg)
{
    NOTREACHED()
        << "should override in subclass if you care about sending messages";
    return false;
}

bool MessageRouter::AddRoute(int32_t routing_id, IPC::Listener* listener)
{
    if (routes_.Lookup(routing_id)) {
        DLOG(ERROR) << "duplicate routing ID";
        return false;
    }
    routes_.AddWithID(listener, routing_id);
    return true;
}

void MessageRouter::RemoveRoute(int32_t routing_id)
{
    routes_.Remove(routing_id);
}

bool MessageRouter::OnMessageReceived(const IPC::Message& msg)
{
    if (msg.routing_id() == MSG_ROUTING_CONTROL)
        return OnControlMessageReceived(msg);

    return RouteMessage(msg);
}

bool MessageRouter::RouteMessage(const IPC::Message& msg)
{
    IPC::Listener* listener = routes_.Lookup(msg.routing_id());
    if (!listener)
        return false;

    return listener->OnMessageReceived(msg);
}

} // namespace IPC
